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Hong Z.,China Communications Construction Company Ltd. | Wei T.,China Communications Construction Company Ltd. | Qiang G.,Wuhan Harbour Engineering Design and Research Institute Co.
Applied Mechanics and Materials

The process of the pre-fabricated abutment and pier foundation construction by bed-burying method is adopted in The non-navigable arch bridge of HZM Bridge, According to the technology difficulties of sinking the pile accurately, A kind of tool type guide pile system with guideing and limitation function is put forward and designed, of which the structure and working method were introduced in this paper. © (2013) Trans Tech Publications, Switzerland. Source

Wang Y.-P.,Wuhan Harbour Engineering Design and Research Institute Co. | Wang Y.-P.,Key Laboratory of Large span Bridge Construction Technology | Han Z.-Q.,China Harbour Engineering Company Ltd | Fang D.-J.,Wuhan Harbour Engineering Design and Research Institute Co. | And 5 more authors.
Corrosion and Protection

The sacrificial anode protection system for pilings and sheet piles of Tripoli port (Lebanon) was studied. Optimal average protection current densities were selected for steel pipes/sheet piles of seaside zone, back filled zone and sea mud zone. Based on field test and investigation, it is found that the optimal average protection current density for seaside zone is 0. 060 A · m -2, back filled zone 0. 030 A · m-2 and sea mud zone 0. 025 A m-2, respectively. Source

Zha J.,Wuhan Harbour Engineering Design and Research Institute Co. | Zha J.,China Communications Construction Company Ltd. | Li J.H.,Wuhan Harbour Engineering Design and Research Institute Co. | Li J.H.,China Communications Construction Company Ltd. | And 7 more authors.
Wuhan Ligong Daxue Xuebao/Journal of Wuhan University of Technology

In this paper, C50 ultra-high-early-strength concrete was prepared with rapid-harden sulphoaluminate cement, alkali carbonate early strength agent, inorganic tribasic acid retarder and polycarboxylate water reducing agent. The properties testing results of C50 ultra-high-early-strength concrete indicated that the compressive strength at 12 h exceeded 37 MPa and at 3 d exceeded 59 MPa. Compared to the C50 ordinary reference concrete, the durability of C50 ultra-high-early strength concrete was investigated. The results indicated that C50 ultra-high-early-strength concrete had the same chloride ion permeability resistance, carbonization resistance and abrasion resistance to the C50 ordinary concrete. As to the sulfate resistance, the ultra-high-early-strength concrete was much better than the ordinary concrete. Source

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